看电影学英语:Be in the black
Be in the black:Having positive net income; having greater income than expenses; making a profit. in other words, if your bank account is in credit, it is in the black. (有利润、盈余)
E.G.1:Just twelve month after our purchase, we managed to get the company into the black.
E.G.1:After the 11th september affair , the airline once was in the red , but recent years , they have tried their best to run and they are in the black now.